Question: What are the giants for Heracles ' murder?
Paraphrase: What are the monsters for Heracles ' murder?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P157 wd:Q122248 . ?sbj wdt:P31 wd:Q191192 } 
Answer: Alcyoneus, Ephialtes, Porphyrion, Eurytos